Vehicle-tire.



J. J. GREPENSTETTE. VEHICLE TIRE.

Amman-1011 FILED 0013.31, 1911.

Patented Dec. 10,1912.

Shown-tor i in the yieldable body section,

" in ro-.774.

was; GREFENSTETTE, ommsecm rENnsYLvAnIA;

To all whom it may concern: i i

' Be it known that I, 'JoHN' J. Guaran- .-'s'rnri n,--cit-izen of the United States,.-resid- 'ing at Pittsburgh, in the county of Allefghcny and State of Pennsylvania, have'im ll-vented certain new and useful Improve- .ments' in Vehicle-Tires, otwhichthe follow- ---ing is a specification. 1. j This invention relates to cushion-tires for .vehicles, and more particularly to thatclass' of such tires which include, as the cushioning means, a solid rubber body, and the primary aim ofv the invcntion' is to "provide such :1. these constructed-that the .body will not be liable to become worn down-or otherwise mutilated; The invention contemplat s theprovisio of a tire of this ,class including5 in structure,;a body of .yieldable'nialterial, 'suc asrubber, and a non-yieldable S8CtiOl1, -ClI-fl cumferentiallyembracing the, ,said body; and one feature of the invention resides in" the novel means employed in holding-the nion-yieldable section in; place upon the. cushion sect-ion. Relative lateral displace ment' of the cushion and noni-yieldable sections is provided against by forming the cushioning section or body with a circumferent-ially extending rib-formed in the inshanks threaded into the said tread section and having their heads seating .in recesses and the nven tion' further contemplates inserting in each of these recesses a filling plug. of the same material as the body section so that the-body. section will not be weakened at the recesses and the'heads of the bolts will be in effect embedded in the said body section. For a full understanding of the invention reference is to be had to the following dc-, scription and accompanying drawing, in which.:

Figure l is a view in side elevation of a. tire constructed in accordance with the pres ent invention applied to a vehicle wh el. 'Fig. 2. is a transverse sectional view in detail through the tire.' Fig. 3 is a perspec tive view of one of the fillingplugs.

- Corresponding and like parts are referred to in the following description and indicated Specification of Letters Patent.

Applicationjled Octob r 31, 1211. Selig 1N2. 657,756.

I 'rably aluminum VEHICLE-TIRE.

Patented Dee-1o, 1912.

in all the vie'ws' of the accompanying; drawing by the same reference characters.

7 The tire embodying the present invention may be employed in any ordinary vehicle wheel havinga rim constructed to hold an ordinary solid rubber cushion tire, and the wheel illustrated in Fig. l is inrli-"aicd in general by. the numeral -1, and. includes a telly 2which is usually of wood. and a band :3 which circnii'lfercnthill embraces the band. are. the,frabbeted inner portions 5' I of um rim-sections 6 between which is tire'einbodying the present invention. In the drawing the cushion body of the tire. 1S indicated by the numeral 7 and is preferably of solidrubber, it-being narrowed as at 8, and fitted between the rim sections 6 in the this position by means of a number of bolts 9 passcd through the said rim sections and through 'the'body section 7. The body sec-I tion 7 p *formed ,with a-relatively wide circulnferentially .extending rib 10, purpose of which will be presently -explaincd. I

The thread section of the tire is indicated by the numeral 11 and preferably has a transversely convex tread surface 12, and is formed of some non-yicldable material, prefiron or steel. The inner side of this tre' sict'ion llis formed with an annular charlie! 13 receiving the rib 10 of the body section 7, in the manner shown in Fig. oftthe drawing. It will be observed that the latei-al'sides of the tread section 11 arc-flush with the corresponding readil'f' understood thatthe engagement of the rib 10 in the channel 13 serves to prevent lateral displacementof the tread section 11 with respect to the body section 7. In order to prcxent creeping of the tread section about the body section, there are provided a number of bolts 14 having their shanks threaded at one end as at. 15 and provided attheir opposite ends with heads 16 which arecircular and are formed each with a groove 17 for the engagement of a large screw driven-or similar I001. The

clamped the-yicldable bodyseclion of thefolly and is secured thereto by means of manner shown in Fig. 2 and being, held in the sides of. the body section 7. It will be body section is formed at intervals with recesses 18 extending radially therein and the body section is further formed with openings, 19, each axiallyalined and in com- 5 munication with one of the recesses 18. The

' tread section 11 is formed in the bottom wall of its channel '13 with threaded sockets 20 and inconnecting the sections 7 and 11 by lmeans of the bolts 14, the said bolts are-in- -'-soekets 20, the bolts will have their heads 15 16 bearing against the bottom walls of the recesses 18. In order that the body'section 7 of the tire will not be weakened at the recesses 18, a cylindrical filling plug 21 is fitted in each recess 18 and rests at-its inner end against the bolt heads 16 at the bottom of this recess andat' its outer ends against v the outer side of the band 3. These plugs 21 are of the same material as the body section 7 of the tire and the bolt heads 16 are therefore, in efi'ect, embedded in the said body section of the tire.

From the foregoing description of the invent-ion it will be readily understood that there is provided a vehicle tire which is par-- ticularly well adapted for use on the wheels -of heavy motor-driven vehicles. It will further be understood that the non yieldable tread 15. efiectually protects the yieldable body 7 of the tire so that the latter will not become worn and mutilated, as do the treads of solid rubber tires now in' use. Furthermore, the tire is not weakened at the points of engagement of the bolts 14: through its body c ti on 7, due to the provision of the filling plugs or cores 21.

is claimed as new is:

' In a vehicle tire,.a yieldable; body section formed with radially extending recesses in its inner face and with bolt receiving openings, anon-yieldable tread section having sockets in its inner side circumferentially embracing the body section with the sockets registerin with the bolt receiving openings of the b0 yv section, securing bolts extended outwardly through the bolt openings of the body and threaded by their outer ends in the Having thus described the invention what sockets of the tread, the heads of said bolts being seated in the outer vends of the recesses,

' and yieldabl'e filling plugs fitted in said recesses and bearing against the bolt heads to support the bolts against inward pressure.

In witness whereof I afiix my signature in presence of two.witnsses. v

T I JOHN J. enrrrrsrrrrn. r. 8. Witnessszt I .KAnnL-Gnmnsrerrn, Gnome A; Fmaxnn. 

